All atoms of the same element contain the same number of protons. the atom that has 9 protons can be represented by the symbol?

Describe how the molecular structures of alkenes and alkynes differ from the structure of alkanes

For a chemical system at equilibrium, what is the concentration of both the reactants and the products

In what year was the first periodic table published

Which phrase describes carbon-14 dating? uses the rate at which nitrogen-14 decays into carbon-14 dates the remains of organisms to determine when they died measures the number of unstable elements in ancient volcanic rocks determines the age of

What is the Big Bang

Susan dropped a nail into a graduated cylinder filled with water. She then recorded the number of millimeters the water rose in the cylinder. Which property of the nail can be determined by the change in height of the water?

Por que un solido mantiene su forma?

Where are electrons most likely to be found in the cloud?

Maddie wanted to make a sugar-water solution to put in her hummingbird feeder. She found some sugar cubes and was about to drop them into a glass of water, when her brother suggested crushing the cubes before mixing.

How is a mineral's effervescence measured? scraping it against an unglazed porcelain plate dripping acid onto it placing it near iron filings striking it with a hammer